---
name: "QwtMathMLDocument"
section: "3"
platform: "linux"
package: "libqwt-doc"
version: "6.0.0-1.2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/QwtMathMLDocument"
---

# QwtMathMLDocument(3)

The QwtMathMLDocument class renders mathematical formulas written in MathML 2.0.

## NAME

QwtMathMLDocument -

The **QwtMathMLDocument** class renders mathematical formulas written in MathML 2.0.

## SYNOPSIS

### Public Types

enum **MmlFont** { **NormalFont**, **FrakturFont**, **SansSerifFont**, **ScriptFont**, **MonospaceFont**, **DoublestruckFont** }\

### Public Member Functions

**QwtMathMLDocument** ()\
 **~QwtMathMLDocument** ()\
 void **clear** ()\
 bool **setContent** (QString text, QString \*errorMsg=0, int \*errorLine=0, int \*errorColumn=0)\
 void **paint** (QPainter \*p, const QPoint &pos) const \
 QSize **size** () const \
 QString **fontName** (MmlFont type) const \
 void **setFontName** (MmlFont type, const QString &name)\
 int **baseFontPointSize** () const \
 void **setBaseFontPointSize** (int size)\

## Detailed Description

The **QwtMathMLDocument** class renders mathematical formulas written in MathML 2.0.

## Constructor & Destructor Documentation

### QwtMathMLDocument::QwtMathMLDocument () Constructs an empty MML document.

### QwtMathMLDocument::~QwtMathMLDocument () Destroys the MML document.

## Member Function Documentation

### int QwtMathMLDocument::baseFontPointSize () const Returns the point size of the font used to render expressions whose scriptlevel is 0.

**See also:**

**setBaseFontPointSize()** **fontName()** **setFontName()**

### void QwtMathMLDocument::clear () Clears the contents of this MML document.

### QString QwtMathMLDocument::fontName (QwtMathMLDocument::MmlFonttype) const Returns the name of the font used to render the font *type*.

**See also:**

**setFontName()** **setBaseFontPointSize()** **baseFontPointSize()** QwtMathMLDocument::MmlFont

### void QwtMathMLDocument::paint (QPainter \*p, const QPoint &pos) const Renders this MML document with the painter *p* at position *pos*.

### void QwtMathMLDocument::setBaseFontPointSize (intsize) Sets the point *size* of the font used to render expressions whose scriptlevel is 0.

**See also:**

**baseFontPointSize()** **fontName()** **setFontName()**

### bool QwtMathMLDocument::setContent (QStringtext, QString \*errorMsg = `0`, int \*errorLine = `0`, int \*errorColumn = `0`) Sets the MathML expression to be rendered. The expression is given in the string *text*. If the expression is successfully parsed, this method returns true; otherwise it returns false. If an error occured *errorMsg* is set to a diagnostic message, while *errorLine* and *errorColumn* contain the location of the error. Any of *errorMsg*, *errorLine* and *errorColumn* may be 0, in which case they are not set.

*text* should contain MathML 2.0 presentation markup elements enclosed in a \<math\> element.

### void QwtMathMLDocument::setFontName (QwtMathMLDocument::MmlFonttype, const QString &name) Sets the name of the font used to render the font *type* to *name*.

**See also:**

**fontName()** **setBaseFontPointSize()** **baseFontPointSize()** QwtMathMLDocument::MmlFont

### QSize QwtMathMLDocument::size () const Returns the size of this MML document, as rendered, in pixels.

## Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.